Hi All,

I'm creating a GUI that uses a custom skin using Synth. I would like to know 
more about how I can determine how much rendering is being done using the 
hardware acceleration on my machine. I've found that the Java 6 SE 
Troubleshooting Guide has some suggestions on how to do this. It mentions that 
the [b]-Dsun.java2d.opengl=True[/b] setting (with a capital "T") can be used to 
switch to using the OpenGL pipeline with trace output enabled. Another setting 
[b]-Dsun.java2d.trace=count[/b] provides a summary of primitives used that is 
dumped on application exit.

The problem I've having is that these system properties don't provide output 
for me - I don't see any trace output on the console. The steps I followed are:

1) compile the GUI to a jar, [b]gui.jar[/b]
2) [b]export J2D_TRACE_LEVEL=4[/b]
3) try [b]java -jar gui.jar -Dsun.java2d.trace=count[/b] -> jar runs but no 
trace counts on exit
4) try [b]java -jar gui.jar -Dsun.java2d.opengl=True[/b] -> jar runs but no 
trace provided during run

The GUI is skinned using images and Java2D primitives so I expect that the mix 
of graphics routines would invoke hardware acceleration of some kind. Is there 
something I'm missing here? Were these system properties perhaps removed for 
the update 10 stable builds?

I've tried this with Java 6 update 10 and update 13. Interestingly, the GUI ran 
very slow on update 10 without the [b]opengl=True[/b] setting but not in the 
case of update 13 so I'm assuming 13 came out with more optimised / accelerated 
routines. Also the [b]opengl=True[/b] setting provided some output on update 10 
but not on update 13.

I've tried this on Ubuntu Jaunty (9.04) and Hardy (8.04). My graphics card is a 
NVidia GeForce series card.

Thanks for reading,

Mark
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